The investigation into a fatal police shooting in which an 18-year-old was killed is continuing, said officials of the Kentucky State Police, the agency in charge.

KSP spokesperson Ron Turley said he could not comment on any injuries sustained by Shelbyville Police officers Suzanna Marcum and Frank Willoughby on Nov. 19, when Trey F. Williams was shot to death at his grandmother’s home on Clifton Court, or on their status at the police department or any other details until after the investigation is completed.

Shelbyville Police Chief Bob Schutte issued a statement the day after the shooting that Marcum and Willoughby had been placed on administration leave, and Maj. D. Goodwin said Tuesday that he could not comment further on that situation.

“That is still under investigation by KSP,” he said. “We can’t comment at all while it is still an open investigation.”

Turley said that putting the officers on administrative leave is a standard procedure in police shootings while an investigation is being conducted.

He said that KSP detectives have finished gathering evidence and interviewing witnesses and are awaiting toxicology results.

“Right now, we are getting everything ready to submit to the grand jury, and we have everything ready except for the toxicology report and that could take at least a month or more,” he said. “That is because they have to do a lot of tests, from everything to looking for various substances like marijuana to bath salts.

“And there are also other tests to be done, like with forensics. When we have presented all of our evidence to the grand jury, they will decide whether the officers acted appropriately or inappropriately.”

According to reports from KSP, the two officers had responded to a 911 call of a suspected burglary at the home in western Shelbyville and had found a broken window.

With assistance from the property manager’s maintenance worker, they entered the home and encountered Williams, armed with a pipe, whom they shot several times with a Taser, with very limited results.

A report said Marcum shot the teen during a struggle in which the teen had incapacitated Willoughby. Both officers were treated at Jewish Hospital Shelbyville with non-life-threatening injuries.

“In order to stop the assault against the incapacitated officer, the second officer [Marcum] utilized deadly force,” Turley said.

The Williams family has hired a Louisville attorney, Frank Mascagni, to look into the possibility of a wrongful death suit. He didn’t return phone messages left this week by a reporter.

“All I can say right now is that it [a police-involved shooting death] is the most traumatic thing that can happen to everybody, on both sides,” Goodwin said.